<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .block1 {
      width: 100px;
      height: 100px;
      position: absolute;
      background-color: antiquewhite;
      left: 20px;
      top: 20px;
    }
    .block2 {
      width: 100px;
      height: 100px;
      background-color: aquamarine;
    }
  </style>
</head>
<body>
  <div class="block1">block 1</div>
  <div class="block2">block 2</div>
</body>
</html>